Method for producing ceramic body

Abstract

Provided is a method for producing a ceramic body, which is capable of preventing the ingress of moisture into a void between a conductor and the ceramic body more effectively in the ceramic body including the conductor therein. Ingress of a supercritical fluid containing an oxide sol precursor is achieved into a void between an internal electrode layer and a ceramic laminate. After that, the oxide sol is turned into a gel, and subjected to a heat treatment, thereby filling the void between the internal electrode layer and the ceramic laminate with an oxide.

What is claimed is: 
     
       1. A method for producing a ceramic body including a conductor therein, the method comprising the steps of:
 causing ingress of a supercritical fluid containing a precursor including an oxide sol into a void between the conductor and the ceramic body; and 
 turning the oxide sol into a gel and applying a heat treatment, thereby filling the void between the conductor and the ceramic body with an oxide of the oxide sol. 
 
     
     
       2. The method for producing a ceramic body according to  claim 1 , wherein the supercritical fluid is carbon dioxide in a supercritical state. 
     
     
       3. The method for producing a ceramic body according to  claim 1 , wherein the ceramic body is a ceramic laminate including a plurality of ceramic layers stacked and conductor layers interposed between the plurality of ceramic layers. 
     
     
       4. The method for producing a ceramic body according to  claim 3 , wherein the ceramic laminate has interfaces exposed between the conductor layers and the ceramic layers. 
     
     
       5. The method for producing a ceramic body according to  claim 1 , wherein the gel obtained by turning the oxide sol into a gel is a hydrophobic SiO 2  gel.